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ventral tube

См. также в других словарях:

  • ventral tube — (ARTHROPODA: Insecta) In all Collembola, a basal column containing a pair of protrusible vesicles (shallow sacs or long and tubular), on the ventral aspect of the first segment; functioning in respiration, water absorption and/or adhesive organ… …   Dictionary of invertebrate zoology

  • ventral tube — noun : collophore …   Useful english dictionary

  • ventral groove — (ARTHROPODA: Insecta) In Collembola, a cuticular channel down the middle ventral line of the body from the labium to the anterior part of the ventral tube; thought to function in osmoregulation …   Dictionary of invertebrate zoology

  • Tube feet — are the many small tubular projections found most famously on the ventral face of a starfish s arms, but are characteristic of the water vascular system of the echinoderm phylum which also includes sea urchins, sand dollars and sea cucumbers and… …   Wikipedia

  • tube foot — tube′ foot n. zool. one of numerous small, tubular processes on the ventral body surface of most echinoderms, used for locomotion and grasping • Etymology: 1885–90 …   From formal English to slang

  • Tube neural — Développement embryonnaire Le tube neural désigne le système nerveux primitif des embryons de cordés. Il se forme par invagination de la plaque neurale en une gouttière, puis par convergence et fusion de ses bords. Du côté de l extrémité… …   Wikipédia en Français

  • tube foot — noun tentacular tubular process of most echinoderms (starfish and sea urchins and holothurians) having a sucker at the end and used for e.g. locomotion and respiration • Hypernyms: ↑foot, ↑invertebrate foot • Part Holonyms: ↑echinoderm * * * noun …   Useful english dictionary

  • tube — Drosophila mutant. Tube is a maternally encoded protein that, together with pelle transduces the signal from toll. Toll, Cactus and Dorsal, along with Tube and Pelle, participate in a common signal transduction pathway to specify the embryonic… …   Dictionary of molecular biology

  • tube foot — one of numerous small, tubular processes on the ventral body surface of most echinoderms, used for locomotion and grasping. [1885 90] * * * …   Universalium

  • Neural tube — Transverse section of half of a chick embryo of forty five hours incubation. The dorsal (back) surface of the embryo is towards the top of this page, while the ventral (front) surface is towards the bottom. (Neural tube is in green.) …   Wikipedia

  • sperm tube — A structure found only in male janiroidean Asellota taking one of two forms: 1. A cuticular tube in the stylet (distal segment of the endopod) of the male second pleopod, consisting of a ventral opening to a rounded chamber in the center of the… …   Crustacea glossary

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